How to Configure Sony PlayStation 3 on Your Home Network
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Using your controller, navigate to the Settings menu on your PS3, and then open the Network Settings menu.
On the right side of the controller, the X button is used to select something on the screen and perform that action or open that menu, while the O button is used to cancel an operation. The directional keys (there are four of them) on the left side of the controller are used to move around the screen to select things (like using a mouse to move your cursor on a PC screen).